After completing some Manny missions, you'll receive a call from Mallorie. She'll let you know that she has yet another friend in Bohan that might be able to use your assistance. Remember -- money is money! Head over to a location on the map marked by an E, which is an apartment building west of San Quentin Avenue. Once nearby, run out of your car and into the building. You'll meet Elizabeta, Mallorie's friend, as well as another character named Patrick McReary. It's Patrick that really needs your help here.

After the conversation ends in the apartment (Mallorie will remind you to give Michelle a call when you can -- good advice if you haven't done so recently), you'll be brought outside. Here, a brief conversation will occur where Patrick will let Niko know that he doesn't trust the guys that he's about to deal with, and needs you to sit on a nearby roof with a rifle to watch the situation unfold. He calls you his "guardian angel". How sweet.